package containers;

//: containers/CollectionMethods.java
// Things you can do with all Collections.
import static net.mindview.util.Print.print;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;

import net.mindview.util.Countries;

public class CollectionMethods {
	@SuppressWarnings("unused")
	public static void main(String[] args) {
		Collection<String> c = new ArrayList<String>();
		c.addAll(Countries.names(6));
		c.add("ten");
		c.add("eleven");
		print(c);

		// List에서 배열생성
		Object[] array = c.toArray();

		// Make a String array from the List:
		String[] str = c.toArray(new String[0]);

		// Find max and min elements; this means
		// different things depending on the way
		// the Comparable interface is implemented:
		print("Collections.max(c) = " + Collections.max(c));
		print("Collections.min(c) = " + Collections.min(c));

		// Add a Collection to another Collection
		Collection<String> c2 = new ArrayList<String>();
		c2.addAll(Countries.names(6));
		c.addAll(c2);
		print(c);
		c.remove(Countries.DATA[0][0]);
		print(c);
		c.remove(Countries.DATA[1][0]);
		print(c);

		// Remove all components that are
		// in the argument collection:
		c.removeAll(c2);
		print(c);
		c.addAll(c2);
		print(c);
		// Is an element in this Collection?
		String val = Countries.DATA[3][0];
		print("c.contains(" + val + ") = " + c.contains(val));
		// Is a Collection in this Collection?
		print("c.containsAll(c2) = " + c.containsAll(c2));
		Collection<String> c3 = ((List<String>)c).subList(3, 5);
		// Keep all the elements that are in both
		// c2 and c3 (an intersection of sets):
		c2.retainAll(c3);
		print(c2);
		// Throw away all the elements
		// in c2 that also appear in c3:
		c2.removeAll(c3);
		print("c2.isEmpty() = " + c2.isEmpty());
		c = new ArrayList<String>();
		c.addAll(Countries.names(6));
		print(c);
		c.clear(); // Remove all elements
		print("after c.clear():" + c);
	}
} /* Output:
[ALGERIA, ANGOLA, BENIN, BOTSWANA, BULGARIA, BURKINA FASO, ten, eleven]
Collections.max(c) = ten
Collections.min(c) = ALGERIA
[ALGERIA, ANGOLA, BENIN, BOTSWANA, BULGARIA, BURKINA FASO, ten, eleven, ALGERIA, ANGOLA, BENIN, BOTSWANA, BULGARIA, BURKINA FASO]
[ANGOLA, BENIN, BOTSWANA, BULGARIA, BURKINA FASO, ten, eleven, ALGERIA, ANGOLA, BENIN, BOTSWANA, BULGARIA, BURKINA FASO]
[BENIN, BOTSWANA, BULGARIA, BURKINA FASO, ten, eleven, ALGERIA, ANGOLA, BENIN, BOTSWANA, BULGARIA, BURKINA FASO]
[ten, eleven]
[ten, eleven, ALGERIA, ANGOLA, BENIN, BOTSWANA, BULGARIA, BURKINA FASO]
c.contains(BOTSWANA) = true
c.containsAll(c2) = true
[ANGOLA, BENIN]
c2.isEmpty() = true
[ALGERIA, ANGOLA, BENIN, BOTSWANA, BULGARIA, BURKINA FASO]
after c.clear():[]
*///:~
